Topolog&amp;#x00ED;a de transformador de estado s&amp;#x00F3;lido CC-CA trif&amp;#x00E1;sico de una sola etapa

Bosso, Jonathan E.; Oggier, Germán G.; García, Guillermo

doi:10.1109/argencon.2014.6868524

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…This figure also shows the difference between them

v_{L - x}

, applied across the leakage inductance, the current through the leakage inductance

i_{L - x}

and the phase current of the power grid

i_{x}

. As it can be observed, current

i_{L - x}

can be represented by three different intervals defined for a half‐switching period [32]. These intervals are established as follows: interval

I ()(, 0 < ω_{normals} t < α_{x})

, interval

II ()(, α_{x} < ω_{normals} t < β_{x})

and interval

III ()(, β_{x} < ω_{normals} t < π)

, where

ω_{normals} = 2 π f_{normals}

f_{normals}

is the switching frequency and the angles

α_{x}

and

β_{x}

are defined as follows:

α_{x} = δ + \frac{π}{2} (1 - d_{x})

β_{x} = δ + \frac{π}{2} (1 + d_{x}) .

…”

Section: Modulation Strategymentioning

confidence: 99%

Isolated bidirectional DC‐to‐three‐phase AC converter for integration of renewable energy sources to electric grid

Bosso

Llomplat

Oggier

et al. 2019

IET Power Electronics

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In this study, a new isolated bidirectional DC-to-three-phase AC converter for integration of renewable energy sources to the electric grid is presented. The main features of this topology are galvanic isolation, capability to control the power flow bidirectionally, soft switching, unit power factor under open-loop control and also allow step up and step down the voltage. Its operation principle is described and a modulation strategy is proposed, which allows to control the power flow according to the requirements of the load and to operate with minimum switching losses owing to the soft switching. The results revealed the feasibility of the proposal with a THD i of the AC current waveforms below 5% and the power factor above 0.98. (a) With a low-frequency transformer with an AC-DC converter, (b) With an AC-DC converter and an isolated DC-DC converter, (c) With an isolated AC-DC converter

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“…This figure also shows the difference between them

v_{L - x}

, applied across the leakage inductance, the current through the leakage inductance

i_{L - x}

and the phase current of the power grid

i_{x}

. As it can be observed, current

i_{L - x}

can be represented by three different intervals defined for a half‐switching period [32]. These intervals are established as follows: interval

I ()(, 0 < ω_{normals} t < α_{x})

, interval

II ()(, α_{x} < ω_{normals} t < β_{x})

and interval

III ()(, β_{x} < ω_{normals} t < π)

, where

ω_{normals} = 2 π f_{normals}

f_{normals}

is the switching frequency and the angles

α_{x}

and

β_{x}

are defined as follows:

α_{x} = δ + \frac{π}{2} (1 - d_{x})

β_{x} = δ + \frac{π}{2} (1 + d_{x}) .

…”

Section: Modulation Strategymentioning

confidence: 99%

Isolated bidirectional DC‐to‐three‐phase AC converter for integration of renewable energy sources to electric grid

Bosso

Llomplat

Oggier

et al. 2019

IET Power Electronics

Self Cite

View full text Add to dashboard Cite

show abstract

“…B. Topología B En la Fig. 2 se muestra la topología presentada en [13], en la cual la fuente de CC se conecta a tres transformadores monofásicos de alta frecuencia a través de un inversor trifásico y la red trifásica está conectada a los citados transformadores a través de convertidores en configuración semi-puente implementados con llaves bidireccionales.…”

Section: A Topología Aunclassified

“…Una vez determinado el ángulo φ, para poder mejorar las formas de onda de las corrientes de cada una de las fases de CA y así poder reducir la tasa de distorsión armónica (Total Harmonic Distortion, THD i ) de las mismas y obtener un factor de potencia (FP) próximo a la unidad, se modifica el ángulo de desfase entre 0 y φ en función de la amplitud instantánea de cada una de las tensiones de la red [13].…”

Section: B Estrategia De Modulación De La Topología Bunclassified

Evaluación de transformadores de estado sólido CC-CA

Bosso

Oggier

García

2014

2014 IEEE Biennial Congress of Argentina (ARGENCON)

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“…These capacitors can be large and expensive [8]. Otherwise, there are different topologies that perform DC-AC conversion in an isolated and bidirectional way without the need for an intermediate stage of conversion [9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Novel modified phase‐shift modulation strategy for isolated AC–DC power converters

Llomplat

Bosso

Carballo

et al. 2020

IET Power Electronics

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Different power converter topologies are used to perform the energy exchange between an AC grid and a DC source belonging to a hybrid electric micro-grid. A single-phase single-stage isolated AC-DC power converter is one of them. Moreover, this power converter can operate under different modulation strategies. The phase-shift modulation (PSM) strategy is capable of varying the phase between the voltages applied to the high-frequency transformer terminals of the power converter in order to control the energy flow in both directions. Based on the PSM strategy, this study presents a novel modified PSM strategy capable of controlling the power flow in both directions and obtaining a current with low total harmonic distortion and a power factor close to 1 for the entire operating range on the AC side. Considering the novel modulation strategy to be proposed, a comparison of three PSM-based modulation strategies was carried out taking into account the total harmonic distortion of current injected into the AC grid, the power factor and the average power transferred. A theoretical analysis was carried out and the results obtained were validated by means of experimental results.

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Topología de transformador de estado sólido CC-CA trifásico de una sola etapa

Cited by 3 publications

References 9 publications

Isolated bidirectional DC‐to‐three‐phase AC converter for integration of renewable energy sources to electric grid

Isolated bidirectional DC‐to‐three‐phase AC converter for integration of renewable energy sources to electric grid

Evaluación de transformadores de estado sólido CC-CA

Novel modified phase‐shift modulation strategy for isolated AC–DC power converters

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Topolog&#x00ED;a de transformador de estado s&#x00F3;lido CC-CA trif&#x00E1;sico de una sola etapa

Cited by 3 publications

References 9 publications

Isolated bidirectional DC‐to‐three‐phase AC converter for integration of renewable energy sources to electric grid

Isolated bidirectional DC‐to‐three‐phase AC converter for integration of renewable energy sources to electric grid

Evaluaci&#x00F3;n de transformadores de estado s&#x00F3;lido CC-CA

Novel modified phase‐shift modulation strategy for isolated AC–DC power converters

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Product

Resources

About

Topología de transformador de estado sólido CC-CA trifásico de una sola etapa

Evaluación de transformadores de estado sólido CC-CA